No, the Brennan grandparents were up in Grey Co, Ontario, and died in 1885 (Patrick) and 1888 (Mary). And John left Theresa fairly well off, with a large, fully paid for home on Addison.

I DID just find Clara (17) and Herbert (14) living there wth Theresa in 1897 per the Husted's Guide, but James (16) wasn't there.

Then in 1900 Clara (20) is living with a Curtis aunt and her husband, James (19) is in Santa Cruz, CA, and Herbert (17) is missing.

Huh. I've just had a thought. I wonder if both boys went to St. Mary's High School. It was in Oakland then (the Brennans were in Berkeley, juts north of Oakland). That might fit; quite a few Brennan boys went to St. Mary's. It moved to Berkeley later, and then my grandparent's moved next to it in the 50s, alhtough my uncle went to a public high school instead. I should ask him why...

Time to write my cousin John (Herbert's grandson; he's a 3rd cousin once removed) to see if he has any info...